The questions the EPA Inspector General appears to be interested in are ones that have been widely and publicly addressed over the past three years, including in peer-reviewed scientific literature. For reference, see our blog posts from here (December 9, 2016), here (June 9, 2016), and here (March 9, 2015).
The most important thing to understand is that there is an extensive body of scientific research, including substantial research produced just over the last four years documenting the significant problem of methane emissions from the oil and gas sector, of which the two studies cited in the IG letter are just a small part. Together, this body of research presents a clear and compelling picture of the magnitude of the methane emissions problem in the U.S. and the urgent need for action to address it.
For example, EDF has helped coordinate 16 different research projects looking at emissions from on the ground and in the air. So far 33 peer-reviewed papers have been published on those projects. More than 35 different research institutions and over 120 individual co-authors have been involved in the work published to date. Read More
